Simple Probability

Front

What is probability?

Back

Probability is the measure of how likely an event is to occur, expressed as a number between 0 and 1.

Front

What does it mean if an event has a probability of 0?

Back

It means the event will not happen.

Front

What does it mean if an event has a probability of 1?

Back

It means the event will definitely happen.

Front

How do you calculate the probability of an event?

Back

Probability = (Number of favorable outcomes) / (Total number of possible outcomes).

Front

If there are 4 red balls and 6 blue balls in a bag, what is the probability of picking a red ball?

Back

Probability = 4/(4+6) = 4/10 = 2/5.

Front

What is the probability of rolling a 3 on a standard six-sided die?

Back

Probability = 1/6.

Front

If you have 3 apples and 2 oranges, what is the probability of picking an orange?

Back

Probability = 2/(3+2) = 2/5.

Front

What is the probability of drawing a heart from a standard deck of cards?

Back

Probability = 13/52 = 1/4.

Front

If you flip a coin, what is the probability of getting heads?

Back

Probability = 1/2.

Front

What is the probability of selecting a letter from the word 'CAT' that is not 'C'?

Back

Probability = 2/3.